chore: add lint checking for our markdown files in CI

[huitseeker]

Importing a goodie from Sui: MystenLabs/sui#1766

[codecov]

Codecov Report

Merging #205 (ba0ee00) into main (fecbfc9) will decrease coverage by 0.97%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #205      +/-   ##
==========================================
- Coverage   79.72%   78.75%   -0.98%     
==========================================
  Files          85       87       +2     
  Lines        9799    11219    +1420     
==========================================
+ Hits         7812     8835    +1023     
- Misses       1987     2384     +397     

Impacted Files	Coverage Δ
test_utils/src/lib.rs	88.21% <0.00%> (-8.58%)	⬇️
network/src/lib.rs	92.30% <0.00%> (-7.70%)	⬇️
worker/src/worker.rs	75.00% <0.00%> (-4.50%)	⬇️
worker/src/tests/quorum_waiter_tests.rs	97.43% <0.00%> (-2.57%)	⬇️
primary/src/helper.rs	83.20% <0.00%> (-2.29%)	⬇️
worker/src/primary_connector.rs	86.48% <0.00%> (-1.75%)	⬇️
primary/src/primary.rs	0.62% <0.00%> (-0.80%)	⬇️
...ock_synchronizer/tests/block_synchronizer_tests.rs	93.11% <0.00%> (-0.69%)	⬇️
worker/src/synchronizer.rs	77.38% <0.00%> (-0.53%)	⬇️
worker/src/processor.rs	92.59% <0.00%> (-0.52%)	⬇️
... and 40 more

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[akichidis]

Awesome tool! Thanks for adding this 👍

[akichidis]

We might want to add the documentation label as well

[huitseeker]

We can do it independently (manually) as the issue is never deleted or re-created, this is just the tags the flow of the scanner, and I'd rather it selected on a pretty narrow set of tags.